Root Cause Analysis

java.util.concurrent.ExecutionException

RemoteTransportException[[node-1][192.168.0.224:9300][indices:data/write/update]]; nested: RemoteTransportException[[node-1]
[192.168.0.224:9300][indices:data/write/update[s]]]; nested:
MapperParsingException[object mapping for [employee] tried to parse field [employee] as object, but found a concrete value];

at org.elasticsearch.common.util.concurrent.BaseFuture$Sync.getValue()